Display panel or portion thereof with graphical user interface



FIG. 1 is a front view of a display panel or portion thereof with a graphical user interface showing a first embodiment of our design;

FIG. 2 is a front view of a display panel or portion thereof with a graphical user interface showing a second embodiment thereof;

FIG. 3 is a front view of a display panel or portion thereof a graphical user interface showing a third embodiment thereof;

FIG. FIG. 4 is a front view of a display panel or portion thereof a graphical user interface showing a fourth embodiment thereof;

FIG. 5 is a front view of a display panel or portion thereof a graphical user interface showing a fifth embodiment thereof;

FIG. 6 is a front view of a display panel or portion thereof a graphical user interface showing a sixth embodiment thereof;

FIG. 7 is a front view of a display panel or portion thereof a graphical user interface showing a seventh embodiment thereof; and

FIG. . 8 is a front view of a display panel or portion thereof a graphical user interface showing an eighth embodiment thereof.

The outermost broken line rectangle illustrates a display panel or portion thereof that forms no part of the claimed design. The remaining broken lines, including all text, illustrate portions of the graphical user interface or a mixed reality environment, and form no part of the claimed design. 

CLAIM The ornamental design for a display panel or portion thereof with a graphical user interface, as shown and described. 